Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN: 9781285866932

Author: Lauralee Sherwood

Publisher: Cengage Learning

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Textbook Question

Chapter 4.3, Problem 1CYU

Draw and label an action potential, indicating the ion movements responsible for the rising phase and the falling phase.

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Chapter 4.2, Problem 3CYU

Chapter 4.3, Problem 2CYU

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Describe how ion movement generates the action potential.

The rising phase of the action potential is the direct result of the: O inflow of potassium O inflow of sodium O inflow of sodium and potassium O outflow of sodium O outflow of sodium and potassium

b) Draw a diagram indicating how the ion concentrations will change during the depolarization phase of an action potential.

Chapter 4 Solutions

Human Physiology: From Cells to Systems (MindTap Course List)

Ch. 4.1 - Name the two types of excitable tissue.Ch. 4.1 - Prob. 2CYU Ch. 4.1 - State the factor responsible for triggering gate...Ch. 4.2 - Prob. 1CYU Ch. 4.2 - Prob. 2CYU Ch. 4.2 - Prob. 3CYU Ch. 4.3 - Draw and label an action potential, indicating the...Ch. 4.3 - Prob. 2CYU Ch. 4.3 - Prob. 3CYU Ch. 4.3 - Prob. 4CYU

Ch. 4.4 - Explain why synapses operate only in the direction...Ch. 4.4 - Prob. 2CYU Ch. 4.4 - Prob. 3CYU Ch. 4.4 - Prob. 4CYU Ch. 4.5 - Define target cell.Ch. 4.5 - Distinguish among the four types of extracellular...Ch. 4.5 - Outline the three general means by which binding...Ch. 4.5 - Prob. 4CYU Ch. 4.6 - Distinguish between cytokines and eicosanoids.Ch. 4.6 - Discuss the roles of phospholipase A2,...Ch. 4.6 - Prob. 3CYU Ch. 4.7 - Prob. 1CYU Ch. 4.7 - Prob. 2CYU Ch. 4.7 - Prob. 3CYU Ch. 4.8 - Prob. 1CYU Ch. 4.8 - Prob. 2CYU Ch. 4 - Conformational changes in channel proteins brought...Ch. 4 - Prob. 2RE Ch. 4 - Prob. 3RE Ch. 4 - Prob. 4RE Ch. 4 - Second-messenger systems ultimately bring about...Ch. 4 - Each steroidogenic organ has all the enzymes...Ch. 4 - Prob. 7RE Ch. 4 - Prob. 8RE Ch. 4 - Prob. 9RE Ch. 4 - Prob. 10RE Ch. 4 - Prob. 11RE Ch. 4 - Prob. 12RE Ch. 4 - Prob. 13RE Ch. 4 - A common membrane-bound intermediary between the...Ch. 4 - Prob. 15RE Ch. 4 - Prob. 16RE Ch. 4 - Prob. 17RE Ch. 4 - Prob. 18RE Ch. 4 - Define the following terms: polarization,...Ch. 4 - Prob. 2UC Ch. 4 - Prob. 3UC Ch. 4 - Prob. 4UC Ch. 4 - Compare the four kinds of gated channels in terms...Ch. 4 - Prob. 6UC Ch. 4 - Prob. 7UC Ch. 4 - Prob. 8UC Ch. 4 - Prob. 9UC Ch. 4 - Define signal transduction.Ch. 4 - Compare the tyrosine kinase and JAK/STAT pathways.Ch. 4 - Prob. 12UC Ch. 4 - Prob. 13UC Ch. 4 - Describe how arachidonic acid is converted into...Ch. 4 - Prob. 15UC Ch. 4 - Prob. 16UC Ch. 4 - Explain how the cascading effect of hormonal...Ch. 4 - Prob. 18UC Ch. 4 - Answer the following questions regarding...Ch. 4 - Prob. 2SQE Ch. 4 - Prob. 3SQE Ch. 4 - Prob. 1ACR Ch. 4 - The rate at which the Na+K+ pump operates is not...Ch. 4 - Which of the following would occur if a neuron...Ch. 4 - Prob. 3TAHL Ch. 4 - Assume presynaptic excitatory neuron A terminates...Ch. 4 - Prob. 5TAHL

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Draw and label an action potential, indicating the ion movements responsible for the rising phase and the falling phase.

Solution Summary: The author explains how an action potential is a short, quick, large (100 mV) membrane potential change, indicating the ion movements responsible for the rising and falling phases.

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Chapter 4 Solutions